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iOS Swift Functions and Optionals Optionals What is an Optional?

Posted by Robert Mylne
Robert Mylne
13,708 Points

Return nil vs return false

Why can't we just have this return false? That was it will either be true or false and an optional won't be needed.

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi Robert,

It does appear pointless in this context, I'd agree.

However, the initial test is testing for the type, not the value. So it's looking for a boolean; it happens to be true.

Have a look at this post to see if that sheds a little light on the possibilities of the optional.

Steve.